Jump to main content
Jump to site search


Development of new and efficient copper(ii) complexes of hexyl bis(pyrazolyl)acetate ligands as catalysts for allylic oxidation

Author affiliations

Abstract

In this study, two new hexyl bis(pyrazol-1-yl)acetate ligands and related copper(II) complexes were prepared and fully characterized in the solid state and in solution. Their electronic and molecular structures were investigated by X-ray photoelectron spectroscopy and near edge X-ray absorption; their ligand molecular structural stability upon coordination to copper was also investigated. The Cu(II) complexes were studied as new catalysts in copper-catalyzed C–H oxidation for allylic functionalization (the Kharasch–Sosnovsky reaction) avoiding the use of any external reducing agents. Using 5 mol% of these catalysts and tert-butylperoxybenzoate as the oxidant, allylic benzoates were obtained in up to 90% yield: the general reaction time was decreased to 6 h and a 5 to 1 ratio of the alkene and tert-butylperoxybenzoate was used to overcome the two most important limitations on their use in chemistry.

Graphical abstract: Development of new and efficient copper(ii) complexes of hexyl bis(pyrazolyl)acetate ligands as catalysts for allylic oxidation

Back to tab navigation

Supplementary files

Article information


Submitted
24 Aug 2020
Accepted
03 Oct 2020
First published
05 Oct 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

Development of new and efficient copper(II) complexes of hexyl bis(pyrazolyl)acetate ligands as catalysts for allylic oxidation

S. Gabrielli, M. Pellei, I. Venditti, I. Fratoddi, C. Battocchio, G. Iucci, I. Schiesaro, C. Meneghini, A. Palmieri, E. Marcantoni, L. Bagnarelli, R. Vallesi and C. Santini, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT02952A

Social activity

Search articles by author

Spotlight

Advertisements